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作 者 ：张世熔,龚国淑,邓良基,李廷轩,夏建国

期 刊 ：生态学报 2003年 23卷 2期 页码：380~386

关键词：景观；斑块；格局；分形维数；多样性指数；

Keywords:landscape, patch, pattern, fractal dimensions, diversity,

摘 要 ：采用分形维数、平均斑块面积、形状指数和伸张度分析了川西不同丘陵地貌区灌溉水田、一般旱地、果园、有林地和农村居民点斑块的空间格局特征 ,并用分形维数、平均斑块面积和 Shannon- Weiner指数 3种方法研究了浅丘、中丘和高丘的综合景观特征。结果表明 ,不同景观斑块在同一丘陵区内的格局特征不同 ,同一景观斑块在 3种丘陵区的格局也有差异。浅丘、中丘和高丘的综合景观格局特点是随着地势起伏的增加、人类活动和土地利用强度的减弱 ,分形维数增加 ,从 1 .1 865到 1 .31 2 3;斑块平均面积则依次变小 ,从 2 .2 2 0 4 hm2 减少到 1 .2 4 0 3hm2 。 3种丘陵区的景观多样性指数分别为 1 .71 99、1 .980 2和 2 .0 898。

Abstract:The spatial pattern characteristics of irrigation terrace, upland field, orchard, forest and residential were studied with fractal dimensions, mean patch area, shape index and elongation in the different hilly regions in the southwest of Mingshan County, Sichuan Province, China. Among the research approaches, the fractal dimensions were calculated by the perimeter-area based on the logarithm relationship between perimeter and area of a landscape patch. From east to west, the relief of low, middle and high h...

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